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Finding the Fourth Proportional to 18,601.80, 27,870.30 and 16,009.80

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Solution

The fourth proportional to 18,601.80, 27,870.30 and 16,009.80 is: 23,986.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,601.80 : 27,870.30 = 16,009.80 : x
  2. Step 2: Convert to fraction form
    18,601.80/27,870.30 = 16,009.80/x
  3. Step 3: Cross multiply
    18,601.80x = 27,870.30 × 16,009.80
  4. Step 4: Simplify right side
    18,601.80x = 446,197,928.94
  5. Step 5: Solve for x
    x = 446,197,928.94/18,601.80
  6. Step 6: Final answer
    x = 23,986.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.